Date:         Mon, 24 Jan 2011 15:18:04 -0500
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: 85 Vangon revs drops, revs drops, revs drops,
              and then dies after a few minutes of this cycle
Comments: To: Mark Carrig <stratmanx@YAHOO.COM>
In-Reply-To:  <115703.76044.qm@web161301.mail.bf1.yahoo.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 10:51 AM 1/24/2011, Mark Carrig wrote:
>Before the trip I had a complete tune up, plugs, wires, distributor
>cap and rotor, even a new mass air flow meter.

Try putting the old AFM (not an MAF, btw) back and see what
happens.  Before that just wiggle the wires around the existing one
while it's going through its dying-swan routine.

If the old AFM doesn't cure it, peel back the boot on the plug and
back probe the terminals, counting one as the leftmost.  Ignition on,
you should have +5 on pin 3, +5 between pins 3 and 4.  If those are
good, open the air box so you can get to the vane and move
it.  Measure from pin 2 to 3 (with an analog meter if available) and
slowly move the vane.  You should see voltage change smoothly from
0-5 volts (or 5-0, I forget which way it goes).  If yes, shut off
ignition and check for zero ohms between pin two and ECU connector
pin 15.  If ok, find a working ECU to trial-swap.

Yours,
David